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Peter Johansen, Tina S Andersen, J Michael Hasenkam, Hans Nygaard, Peter K Paulsen
Today, the quality of mechanical heart valves is quite high, and implantation has become a routine clinical procedure with a low operative mortality (< 5%). However, patients still face the risks of blood cell damage, thromboembolic events, and material failure of the prosthetic device. One mechanism found to be a possible contributor to these adverse effects is cavitation. In vitro, cavitation has been directly demonstrated by visualization and indirectly in vivo by registering of high frequency pressure fluctuations (HFPF)...
2014: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
Elziliam Aranha de Sousa, José Adolfo Homobono Machado Bittencourt, Nayana Keyla Seabra de Oliveira, Shayanne Vanessa Correia Henriques, Leide Caroline dos Santos Picanço, Camila Pena Lobato, José Renato Ribeiro, Washington Luiz Assunção Pereira, José Carlos Tavares Carvalho, Jocivânia Oliveira da Silva
Antivenom therapy has been ineffective in neutralizing the tissue damage caused by snakebites. Among therapeutic strategies to minimize effects after envenoming, it was hypothesized that a low level laser would reduce complications and reduce the severity of local snake venom effects. In the current study, the effect of a low-level semiconductor gallium arsenide (GaAs) laser on the local pathological alterations induced by B. moojeni snake venom was investigated. The experimental groups consisted of five male mice, each administered either B...
October 2013: Photochemical & Photobiological Sciences
I H Nazarian, I Aryanpur
Sixty-two consecutive surgically removed chronic rheumatic mitral valves were classified and tabulated according to their pathological features in relation to age and sex of the patients. The pathological features of the valves are quite different from the cases seen in Western hemisphere. Three types of gross pathological features are described. First is fibrous stenotic type which has very thick cusps and extremely short chordae tendineae. It is the most frequent rheumatic vavle seen in children, and majority of the valves show pure stenosis, for which probably open commissurotomy is the procedure of choice...
January 1978: Japanese Heart Journal
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